555 timer reverse polarity circuit

[Tefera]

Hopefully this will be the last version of this. The LEDs were moved into the constant current legs of the supply as ElectroBrain suggested. Like 12v walmart

************* Notes **************
All Resistors are 1/4W
All Disc Caps are rated >= 25VDC
C2: Electrolytic >=25VDC
K1: Can be any SPDT relay with a coil resistance >= 400 Ohms
and contacts rating >= 500mA
http://www.mpja.com/12VDC-SPDT-Essex-Relay/productinfo/18454+RL/

Hi CDRIVE. Please can you tell me how i can use this diagram from 30 v adapter which has only + and - which is standard adapter.